CN104249715B - Bus Brake energy recovery regenerates hydraulic system - Google Patents
Bus Brake energy recovery regenerates hydraulic system Download PDFInfo
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- CN104249715B CN104249715B CN201410468247.6A CN201410468247A CN104249715B CN 104249715 B CN104249715 B CN 104249715B CN 201410468247 A CN201410468247 A CN 201410468247A CN 104249715 B CN104249715 B CN 104249715B
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- 238000011084 recovery Methods 0.000 title claims abstract 19
- 239000012530 fluid Substances 0.000 claims abstract 8
- 238000004064 recycling Methods 0.000 claims abstract 6
- 230000001172 regenerating effect Effects 0.000 claims 4
- 230000001133 acceleration Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 239000002828 fuel tank Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000005381 potential energy Methods 0.000 abstract 1
- 230000008929 regeneration Effects 0.000 abstract 1
- 238000011069 regeneration method Methods 0.000 abstract 1
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- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
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Abstract
The invention discloses a kind of bus Brake energy recovery to regenerate hydraulic system, including the hydraulic pump/motor (7) for being of coupled connections by attachment means (13) and gearbox (12), respectively by the first solenoid directional control valve (15), the second solenoid directional control valve (4) connection corresponding with two hydraulic fluid ports of electro-hydraulic reversing valve (2), first solenoid directional control valve (15), the second solenoid directional control valve (4) and electro-hydraulic reversing valve (2) are connected two hydraulic fluid ports of hydraulic pump/motor (7) with hydraulic accumulator (5).The present invention bus Brake energy recovery regeneration hydraulic system two hydraulic fluid ports of hydraulic pump/motor are connected by two solenoid directional control valves with electromagnetic hydraulic valve and hydraulic accumulator respectively, realize bus move backward in the case of Brake energy recovery and recycling.The hydraulic system realizes the recycling and reuse of bus braking energy and potential energy, and simple in construction, reliable operation, cost are low.
Description
Technical field
The present invention relates to a kind of bus Brake energy recovery to regenerate hydraulic system.
Background technology
The city bus automobile run at present, because bus station is more, traffic lights are more, parking carrying and road are crowded
Etc. reason, the operating mode such as cause city bus fairly frequently to brake, stop, starting, accelerating.Common bus was being braked
The heat that Cheng Zhong, its braking energy and potential energy are typically changed on brake is scattered and disappeared and consumed in the form of heat energy, causes energy
Waste；Engine is devoted oneself to work again under the operating mode of low-speed heave-load again during starting, has not only been wasted the energy but also has been polluted environment.
The hybrid power bus that presently, there are, mainly oil electric mixed dynamic or gas-electricity power combined, it is braked
The energy-storage travelling wave tube of energy regenerating is mainly super capacitor or battery, and its energy density is smaller, and expensive.And hydraulic pressure stores
For energy device compared to super capacitor or battery, its energy density is big, cheap, has larger advantage.In bus system
In dynamic moderating process, speed is reduced to 0 by V, and in brake energy regeneration system, the kinetic energy in Motor Vehicle Braking Procedure is through power train
System is transferred to hydraulic pump/motor, and low pressure oil is pressed into high pressure accumulator by hydraulic pump/motor again, so as to realize the recovery of energy.
Hydraulic accumulation energy type Brake energy recovery regenerative system, with its high power density, low cost and obtain more and more extensive
Concern.Wherein, parallel hydraulic energy regenerating device is in parallel with vehicle original mechanical driving device, utilizes hydraulic pump/motor
Operating mode is reversible and the energy-storage function of hydraulic accumulator, reclaims the braking energy of vehicle and is re-used, so as to reach energy-conservation
The purpose of emission reduction.But parallel hydraulic energy-regenerating system generally returns without the braking energy in the case of reversing at this stage
Receive the function of recycling.
The content of the invention
It is an object of the invention to provide a kind of bus Brake energy recovery to regenerate hydraulic system, to solve existing hydraulic pressure
System can not in the case of reversing carry out Brake energy recovery recycling the problem of.
In order to realize the above object the technical solution adopted in the present invention is：A kind of bus Brake energy recovery is again
Raw hydraulic system, including the hydraulic pump/motor (7) for being of coupled connections by attachment means (13) and gearbox (12), it is described
Two hydraulic fluid ports of hydraulic pump/motor (7) are changed by the first solenoid directional control valve (15), the second solenoid directional control valve (4) with electro-hydraulic respectively
The corresponding connection of two hydraulic fluid ports to valve (2), first solenoid directional control valve (15), the second solenoid directional control valve (4) and electro-hydraulic commutation
Valve (2) is connected with hydraulic accumulator (5).
First solenoid directional control valve (15), the second solenoid directional control valve (4) are two-bit triplet solenoid directional control valve, electro-hydraulic to change
Be three-position four-way electromagnetic directional valve to valve (2), the first solenoid directional control valve (15), the second solenoid directional control valve (4) P mouths respectively with liquid
Press two hydraulic fluid ports of pump/motor (7) are corresponding to connect, the first solenoid directional control valve (15), the A mouths difference of the second solenoid directional control valve (4)
A mouths, B mouths with electro-hydraulic reversing valve (2) are connected, and the first solenoid directional control valve (15), the B mouths of the second solenoid directional control valve (4) are used respectively
It is connected in hydraulic accumulator (5)；Hydraulic accumulator (5) is used to be connected with the P mouths of electro-hydraulic reversing valve (2), electro-hydraulic reversing valve (2)
T mouths be used for be connected with fuel tank.
The hydraulic accumulator (5) and the first solenoid directional control valve (15), the second solenoid directional control valve (4) and electro-hydraulic reversing valve
(2) check valve is respectively connected between.
2/2-way solenoid directional control valve (16) is connected between the hydraulic accumulator (5) and electro-hydraulic reversing valve (2).
Overflow valve (3) is also associated with the hydraulic accumulator (5).
On oil circuit between the hydraulic pump/motor (7) and the first solenoid directional control valve (15), the second solenoid directional control valve (4)
The other fuel-displaced branch road being connected to for being connected by check valve with fuel tank.
It is respectively connected with and is used for and ECU on two hydraulic fluid ports of the hydraulic pump/motor (7) and the hydraulic fluid port of hydraulic accumulator (5)
The pressure sensor of the signal input part connection of ECU, the signal output parts of the ECU ECUs be also respectively used to
Brake pedal, gas pedal, the connection of gear signal end, the control terminal of ECU ECUs and the first solenoid directional control valve (15), second
The control terminal connection of solenoid directional control valve (4), electro-hydraulic reversing valve (2) and 2/2-way solenoid directional control valve (16).
It is by reversible that the bus Brake energy recovery of the present invention, which regenerates the recovery of hydraulic system energy and utilized,
Hydraulic pump/motor and hydraulic accumulator realize, hydraulic pump/motor oil pump the most when recovering energy, is releasing energy
Shi Zuowei motors.Energy regenerating is by valve group and its realization of corresponding servicing unit, by the two of hydraulic pump/motor with release conversion
Individual hydraulic fluid port is connected by two solenoid directional control valves with electromagnetic hydraulic valve and hydraulic accumulator respectively, realizes bus reversing situation
Under Brake energy recovery and recycling.The hydraulic system is on the basis of traditional bus chassis, by increasing a set of system
Energy reclaims hydraulic system, realizes the recycling and reuse of bus braking energy and potential energy, reaches the mesh of energy-saving and emission-reduction
, simple in construction, reliable operation, cost are low.
The Brake energy recovery hydraulic system controls electromagnetic switch valve events by ECU ECUs, and control accuracy is higher,
Realize Brake energy recovery and the Automated condtrol recycled.
Brief description of the drawings
Fig. 1 is the structure principle chart of the present invention；
Fig. 2 is Brake energy recovery control flow chart；
Fig. 3 is that Brake energy recovery recycles control flow chart.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described further specific embodiment.
The structure principle chart of hydraulic pressure system embodiment is regenerated for bus Brake energy recovery of the present invention as shown in Figure 1,
As seen from the figure, the reclaiming hydraulic system is coupled by gearbox with former vehicle mechanical transmission system, i.e. hydraulic pump/horse
It is of coupled connections up to 7 by attachment means 13 and gearbox 12, gearbox 12 becomes through exporting axis connection bus main reducing gear 14
The input of fast case is connected by clutch with engine.
Two hydraulic fluid ports of hydraulic pump/motor 7 respectively by the first solenoid directional control valve 15, the second solenoid directional control valve 4 with it is electro-hydraulic
Two hydraulic fluid ports of reversal valve 2 are corresponding to be connected, and the first solenoid directional control valve 15, the second solenoid directional control valve 4 and electro-hydraulic reversing valve 2 are and liquid
Pressure accumulator 5 connects.
First solenoid directional control valve 15, the second solenoid directional control valve 4 of the present embodiment are two-bit triplet solenoid directional control valve, electro-hydraulic
Reversal valve 2 is three-position four-way electromagnetic directional valve, the first solenoid directional control valve 15, the second solenoid directional control valve 4 P mouths respectively with hydraulic pressure
Two hydraulic fluid ports of pump/motor 7 are corresponding to be connected, and the first solenoid directional control valve 15, the A mouths of the second solenoid directional control valve 4 change with electro-hydraulic respectively
A mouths, the connection of B mouths to valve 2, the first solenoid directional control valve 15, the B mouths of the second solenoid directional control valve 4 are respectively used to and hydraulic accumulator 5
Connection；Hydraulic accumulator 5 is used to be connected with the P mouths of electro-hydraulic reversing valve 2, and the T mouths of electro-hydraulic reversing valve 2 are used to be connected with fuel tank.
In addition, to avoid fluid adverse current in output procedure, list is set in the solenoid directional control valve 15 of hydraulic accumulator 5 and first
To valve 1-5, its check valve 1-2 is provided between the second solenoid directional control valve 4, it is provided with check valve 1- between electro-hydraulic reversing valve 2
1；Meanwhile 2/2-way solenoid directional control valve 16 is also provided between hydraulic accumulator 5 and electro-hydraulic reversing valve 2；And stored in hydraulic pressure
The overflow valve 3 being connected with fuel tank can be set on device 5.
It is other on oil circuit between the solenoid directional control valve 15 of hydraulic pump/motor 7 and first, the second solenoid directional control valve 4 to be connected to use
In the branch road connected by check valve 1-4,1-3 with fuel tank, check valve 1-4,1-3 are used to ensureing the first solenoid directional control valve 15, the
The fluid of the hydraulic fluid port of two solenoid directional control valve 4 will not flow to fuel tank.
It is respectively connected with and is used for and ECU ECUs on two hydraulic fluid ports of hydraulic pump/motor 7 and the hydraulic fluid port of hydraulic accumulator 5
Signal input part connection pressure sensor 6-1,6-2,6-3, the signal output part of ECU ECUs is also respectively used to and makes
Dynamic pedal 9, gas pedal 10, the connection of gear signal end, the control terminal of ECU ECUs and the first solenoid directional control valve 15, second
The control terminal connection of solenoid directional control valve 4, electro-hydraulic reversing valve 2 and 2/2-way solenoid directional control valve 16.
The bus Brake energy recovery regeneration hydraulic pressure System Working Principle and process of the present invention is as follows：
(1) bus drive shift Brake energy recovery：ECU ECUs receive brake pedal 9, gas pedal 10 and shelves
Position signal, according to the Brake energy recovery flow chart shown in Fig. 2, if it is determined that now vehicle is forward gear and can carry out Brake Energy
Amount recovery, then control the second solenoid directional control valve 4 to work in right position, electro-hydraulic reversing valve 2, the first solenoid directional control valve 15 and 2/2-way
Solenoid directional control valve 16 is in original state, and the driving force of wheel is through main reducing gear 14, the output shaft of gearbox and attachment means 13
Drive the work of hydraulic pump/motor 7 hydraulic pressure pump mode, the hydraulic oil that hydraulic pump/motor 7 pumps out by the second solenoid directional control valve 4 P mouths
Exported through B mouths, then accumulator 5 is flowed into through hydraulically-controlled one-way valve 1-2, reclaim braking energy, hydraulically-controlled one-way valve 1-2 ensures hydraulic system
In energy recovery process, hydraulic pump/motor 7 will not be by the hydraulic oil reverse drive of accumulator.
(2) bus reverse gear Brake energy recovery：ECU ECUs receive brake pedal 9, gas pedal 10 and gear
Signal, according to the Brake energy recovery logical flow chart shown in Fig. 2, if it is determined that being now to reverse gear and can carry out braking energy to return
Receive, then control the first solenoid directional control valve 15 to work in left position, electro-hydraulic reversing valve 2, the second solenoid directional control valve 4 and 2/2-way electromagnetism
Reversal valve 16 is in original state, and the driving force of wheel drives through main reducing gear 14, the output shaft of gearbox and attachment means 13
The hydraulic pressure pump mode of hydraulic pump/motor 7 works, and the hydraulic oil that hydraulic pump/motor 7 pumps out is by the P mouths of the first solenoid directional control valve 15 through B
Mouth output, then accumulator 5 is flowed into through hydraulically-controlled one-way valve 1-5, braking energy is reclaimed, hydraulically-controlled one-way valve 1-5 ensures that hydraulic system exists
In energy recovery process, hydraulic pump/motor 7 will not be by the hydraulic oil reverse drive of accumulator.
(3) bus drive shift Brake energy recovery recycles：ECU ECUs receive brake pedal 9, gas pedal
10 and gear signal, according to the Brake energy recovery flow chart shown in Fig. 3, if it is determined that being now forward gear and can be braked
Energy regenerating recycles, then controls 2/2-way solenoid directional control valve 16 to work, electro-hydraulic reversing valve 2 works in left position, the first electromagnetism
Reversal valve 15 works in right position, and the second solenoid directional control valve 4 works in left position.The hydraulic oil of hydraulic accumulator 5 is through 2/2-way electricity
The P mouths that oil inlet, oil-out and the check valve 1-1 of magnetic reversal valve 16 enter electro-hydraulic reversing valve 2 enter the first electromagnetic switch through A mouths
Valve 15, then flow into hydraulic pump/motor 7, high-voltage oil liquid driving hydraulic pump/motor 7 through P mouths by the A mouths of the first solenoid directional control valve 15
Operated in a manner of hydraulic motor, P mouth of the fluid through the second solenoid directional control valve 4 that hydraulic pump/motor 7 exports flows into electro-hydraulic through A mouths
The B mouths of reversal valve 2, then it flow back into fuel tank through its T mouth.Torque caused by hydraulic pump/motor 7 is by attachment means 13 through speed changer
Output shaft, the driving moment of main reducing gear 14 travel bus, realize the recycling of braking energy.
(4) bus reverse gear Brake energy recovery recycles：ECU ECUs receive brake pedal 9, gas pedal 10
And gear signal, according to the Brake energy recovery logical flow chart shown in Fig. 3, if it is determined that being now to reverse gear and can be braked
Energy regenerating recycles, then controls 2/2-way solenoid directional control valve 16 to work, electro-hydraulic reversing valve 2 works in right position, the second electromagnetism
Reversal valve 4 works in left position, and the first solenoid directional control valve 15 works in right position.The hydraulic oil of hydraulic accumulator 5 is through 2/2-way electricity
The P mouths that oil inlet, oil-out and the check valve 1-1 of magnetic reversal valve 16 enter electro-hydraulic reversing valve 2 enter the second electromagnetic switch through B mouths
Valve 4, then by the second solenoid directional control valve 4 A mouths through P mouths flow into hydraulic pump/motor 7, high-voltage oil liquid drive hydraulic pump/motor 7 with
Hydraulic motor mode operates, and P mouth of the fluid through the first solenoid directional control valve 15 that hydraulic pump/motor 7 exports flows into electro-hydraulic change through A mouths
Fuel tank is flow back into the A mouths of valve 2, then through its T mouth.Torque caused by hydraulic pump/motor 7 is by attachment means 13 through speed changer
Output shaft, the driving moment of main reducing gear 14 travel bus, realize the recycling of braking energy.
The hydraulic system of the present invention passes through hydraulic pump/motor and hydraulic accumulator using hydraulic accumulator as energy-storage travelling wave tube
Mode, according to ECU control strategies, by obtaining the signals such as brake pedal, gas pedal and gear, by the braking of bus
Energy regenerating is in hydraulic accumulator；According to ECU control strategies, by obtaining the signals such as brake pedal, gas pedal and gear
When, the braking energy of release recovery when bus starts to walk to accelerate or overtake other vehicles, power output is carried out with assisted engine, realized
The recycling and reuse of bus braking energy, reach the purpose of energy-saving and emission-reduction.
Above example is only used for helping the core concept for understanding the present invention, it is impossible to the present invention is limited with this, for ability
The technical staff in domain, every thought according to the present invention, the present invention is modified or equivalent substitution, in embodiment
And any change done in application, it should be included in the scope of the protection.
Claims (5)
1. a kind of bus Brake energy recovery regenerates hydraulic system, including for passing through attachment means (13) and gearbox
(12) hydraulic pump/motor (7) being of coupled connections, it is characterised in that：Two hydraulic fluid ports of the hydraulic pump/motor (7) pass through respectively
The connection corresponding with two hydraulic fluid ports of electro-hydraulic reversing valve (2) of first solenoid directional control valve (15), the second solenoid directional control valve (4), described the
One solenoid directional control valve (15), the second solenoid directional control valve (4) and electro-hydraulic reversing valve (2) are connected with hydraulic accumulator (5)；Public transport vapour
In Brake energy recovery, hydraulic pump/motor is worked car with hydraulic pressure pump mode；Bus recycles in Brake energy recovery
When, hydraulic pump/motor is worked with motor manner；Two two are connected between the hydraulic accumulator (5) and electro-hydraulic reversing valve (2)
Electric change valve (16)；It is respectively connected with two hydraulic fluid ports of the hydraulic pump/motor (7) and the hydraulic fluid port of hydraulic accumulator (5)
For the pressure sensor being connected with the signal input part of ECU ECUs, the signal output part of the ECU ECUs also divides
It Yong Yu be connected with brake pedal, gas pedal, gear signal end, the control terminal of ECU ECUs and the first solenoid directional control valve
(15), the control terminal connection of the second solenoid directional control valve (4), electro-hydraulic reversing valve (2) and 2/2-way solenoid directional control valve (16)；
When vehicle is braked, if gear is reverse gear and when can carry out Brake energy recovery, the first solenoid directional control valve (15) work
Energy regenerating is carried out in left position；If gear is reverse gear but when can not carry out Brake energy recovery, the first solenoid directional control valve (15)
Right position is operated in without energy regenerating；If gear is drive shift and when can carry out Brake energy recovery, the second electromagnetic switch
Valve (4) is operated in right position and carries out energy regenerating；If gear is drive shift but when can not carry out Brake energy recovery, the second electromagnetism
Reversal valve (4) is operated in left position without energy regenerating；
When vehicle start or overtake other vehicles acceleration when, if gear is reverse gear and when can carry out Brake energy recovery recycling, two two
Electric change valve (16) works, and electro-hydraulic reversing valve (2) is operated in right position, and accumulator (5) is according to the release recovery of ECU ECUs
Energy；If gear is reverse gear but when can not carry out Brake energy recovery recycling, 2/2-way solenoid directional control valve (16) and electricity
Liquid reversal valve (2) maintains the original state, and accumulator (5), which does not discharge, to recover energy；If gear is drive shift and can carry out Brake Energy
When measuring recycling, 2/2-way solenoid directional control valve (16) work, electro-hydraulic reversing valve (2) is operated in left position, accumulator (5) according to
Recovered energy according to the release of ECU ECUs；If gear is drive shift but when can not carry out Brake energy recovery recycling, two
Two electric change valves (16) and electro-hydraulic reversing valve (2) maintain the original state, and accumulator (5), which does not discharge, to recover energy.
2. bus Brake energy recovery according to claim 1 regenerates hydraulic system, it is characterised in that：Described first
Solenoid directional control valve (15), the second solenoid directional control valve (4) are two-bit triplet solenoid directional control valve, and electro-hydraulic reversing valve (2) is three four
Electric change valve, the first solenoid directional control valve (15), the second solenoid directional control valve (4) P mouths respectively with hydraulic pump/motor (7)
Two hydraulic fluid ports are corresponding to be connected, the first solenoid directional control valve (15), the second solenoid directional control valve (4) A mouths respectively with electro-hydraulic reversing valve (2)
A mouths, B mouths connection, the first solenoid directional control valve (15), the B mouths of the second solenoid directional control valve (4) are respectively used to and hydraulic accumulator
(5) connect；Hydraulic accumulator (5) is used to be connected with the P mouths of electro-hydraulic reversing valve (2), and the T mouths of electro-hydraulic reversing valve (2) are used for and oil
Case connects.
3. bus Brake energy recovery according to claim 1 regenerates hydraulic system, it is characterised in that：The hydraulic pressure
List is respectively connected between accumulator (5) and the first solenoid directional control valve (15), the second solenoid directional control valve (4) and electro-hydraulic reversing valve (2)
To valve.
4. bus Brake energy recovery according to claim 1 regenerates hydraulic system, it is characterised in that：The hydraulic pressure
Overflow valve (3) is also associated with accumulator (5).
5. bus Brake energy recovery according to claim 1 regenerates hydraulic system, it is characterised in that：The hydraulic pressure
It is other on oil circuit between pump/motor (7) and the first solenoid directional control valve (15), the second solenoid directional control valve (4) to be connected to for passing through
The fuel-displaced branch road that check valve connects with fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410468247.6A CN104249715B (en) | 2014-09-15 | 2014-09-15 | Bus Brake energy recovery regenerates hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410468247.6A CN104249715B (en) | 2014-09-15 | 2014-09-15 | Bus Brake energy recovery regenerates hydraulic system |
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| Publication Number | Publication Date |
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| CN104249715A CN104249715A (en) | 2014-12-31 |
| CN104249715B true CN104249715B (en) | 2017-12-15 |
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| CN201410468247.6A Active CN104249715B (en) | 2014-09-15 | 2014-09-15 | Bus Brake energy recovery regenerates hydraulic system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105799667B (en) * | 2016-03-18 | 2018-10-09 | 江苏大学 | A kind of high-low pressure tank air suspension Recovering Waste Energy of Braking in Automobiles regenerative system and control method |
| CN108973980A (en) * | 2018-07-10 | 2018-12-11 | 许昌学院 | A kind of parallel-type vehicle hybrid power control system and control method |
| CN108973645A (en) * | 2018-07-10 | 2018-12-11 | 许昌学院 | A kind of starting of vehicle enclosed and regenerative brake control system and control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060108860A1 (en) * | 2004-11-23 | 2006-05-25 | Delaware Capital Formation | Brake energy recovery system |
| CN101736771B (en) * | 2010-02-05 | 2011-08-24 | 浙江大学 | Hydraulic Excavator Rotary Deceleration Braking Energy Recovery System |
| DE102011106715A1 (en) * | 2011-07-06 | 2013-01-10 | Linde Material Handling Gmbh | Hydro-static drive system for use in rotary drive motor of rotary drive of mobile working machine i.e. excavator, has hydraulic accumulator attached to delivery line of pump, where delivery line is guided to directional valve |
| CN102758813B (en) * | 2012-08-01 | 2014-12-31 | 三一重工股份有限公司 | Energy-recovery hydraulic system and engineering machinery |
| CN204161326U (en) * | 2014-09-15 | 2015-02-18 | 郑州宇通客车股份有限公司 | A kind of bus Brake energy recovery regenerated liquid pressing system |
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Address after: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Patentee after: Yutong Bus Co.,Ltd. Address before: 450016 Yutong Industrial Zone, eighteen Li River, Henan, Zhengzhou Patentee before: ZHENGZHOU YUTONG BUS Co.,Ltd. |
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